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公开(公告)号：US3246973A
公开(公告)日：1966-04-19
申请号：US12403461
申请日：1961-07-14
Applicant: PFAUDLER PERMUTIT INC
Inventor： BANGE GLENN R , JONES MAYNARD J , YOUNG HERBERT F
CPC classification number: F16L49/00 , F16L58/14 , Y10T29/4975
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